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LC5222S Datasheet(PDF) 7 Page - Sanken electric |
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LC5222S Datasheet(HTML) 7 Page - Sanken electric |
7 / 11 page Reference Components List of a Buck Configuration Circuit (refer to Typical Application diagram); Input voltage: 100 VAC, LED output voltage: 15 V, LED peak output current : 0.3 A Name Type Value Description LED LED ― User-defined L1 Inductor 1 mH / 1 A Choke coil for smoothing current D1 Fast recovery rectifier diode RD2A Free-wheeling diode for recirculation CIN Capacitor Up to 4.7 μF / 450 V Main supply source filtering capacitor; 1 nF or higher can be used C1 Capacitor 0.1 μF / 25 V Internal regulator stabilizing capacitor C2 Capacitor 1000 pF (to 0.1 μF) / 25 V REF pin voltage stabilizing capacitor C3 Capacitor 0.1 μF / 250 V Smoothing capacitor for reducing LED ripple current (Optional) CPWM Capacitor 100 pF / 25 V PWM off-time setting capacitor (internal PWM control) R1 Resistor 620 kΩ / 1/8 W Resistor for setting peak output current on OUT pin R2 Resistor 51 kΩ / 1/8 W Resistor for setting peak output current on OUT pin RS Resistor 1.0 Ω / 1 W Resistor for output current detection Note: Because no specific application or noise factor is considered in the typical application circuit diagrammed, it is required that the user takes into consideration such issues during designing. Moreover, the above values are only reference examples. It is required to change components according to the LED load and other conditions which are actually used. LC5222D/25D and LC5222S/25S 7 SANKEN ELECTRIC CO., LTD. LC5222D/25D_22S/25S-DS Off-Line DC/DC LED Driver ICs August 8, 2012 |
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